A little girl provided a lifesaving bone marrow donation to her 7-week-old brother, who has a disorder known as “bubble boy” disease, according to their mother. Kayla Land shared this image of Khloe, Colton and her other daughter the day before the surgery. “Worrying for one child is so difficult,” she wrote. “Worrying about two is immensely challenging.” But now, both children “are recovering great,” Land told Fox News. Baby Colton will spend the next month in inpatient and two more months at the Ronald McDonald House before returning home.